3445991287 has 8 divisors (see below), whose sum is σ = 3477019392. Its totient is φ = 3415035000.

The previous prime is 3445991243. The next prime is 3445991303. The reversal of 3445991287 is 7821995443.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3445991287 - 2¹⁵ = 3445958519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3445994287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80868 + ... + 115894.

It is an arithmetic number, because the mean of its divisors is an integer number (434627424).

Almost surely, 2^3445991287 is an apocalyptic number.

3445991287 is a deficient number, since it is larger than the sum of its proper divisors (31028105).

3445991287 is a wasteful number, since it uses less digits than its factorization.

3445991287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35909.

The product of its digits is 2177280, while the sum is 52.

The square root of 3445991287 is about 58702.5662726937. The cubic root of 3445991287 is about 1510.4443361451. Note that the first 3 decimals are identical.

The spelling of 3445991287 in words is "three billion, four hundred forty-five million, nine hundred ninety-one thousand, two hundred eighty-seven".